\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing,decorations.pathreplacing,decorations.shapes,}
\begin{document}
\small
\begin{tikzpicture}[>=latex,scale=1.0]
  % \useasboundingbox(-1.0,-1.4)rectangle(3.5,3.7);
  \begin{scope}[rotate=30]
    \draw(0,0)ellipse(1 and 0.7);
    \draw[pattern=crosshatch](1,-0.05)rectangle(3,0.05);
    \draw[fill=lightgray!30](0,0.7)to[bend right=60](0,-0.7)arc(270:90:1 and 0.7);
  \end{scope}
\end{tikzpicture}
\end{document}